Can PoA Be Considered a ‘Permissioned’ Blockchain?
PoA is generally considered a public, permissionless blockchain due to its PoW component, which allows anyone to mine a block template. However, the PoS validation phase can introduce elements of permissioning if the staker set is limited or pre-selected.
If the staker selection is truly random and open to all coin holders, it remains permissionless. If a central authority controls the staker list, it leans toward a permissioned model.
Glossar
Permissionless Blockchain
Architecture ⎊ A permissionless blockchain, within cryptocurrency, options trading, and financial derivatives, establishes a decentralized infrastructure absent of central authorities dictating participation or validation.
PoA
Mechanism ⎊ Proof of Authority (PoA) is a consensus mechanism where transactions are validated by a limited number of pre-approved, trusted validators rather than through competitive mining.
Staker Selection
Process ⎊ Staker selection is the algorithmic process by which validators are chosen to participate in block production and transaction validation within a Proof-of-Stake (PoS) blockchain network.